Macrosteles cristatus Ribaut 1927, syn. nov.

Macrosteles cristatus (Ribaut, 1927)

(Plate 1, figs. 9–17)

Length (including tegmen). Male: 3.0– 3.5 mm; female: 3.5–4.0 mm.

Greenish yellow; ocelli pale green; head with 3 pairs of irregular black marks and short longitudinal black bands between ocelli and eyes.

Male abdomen. 2nd acrotergite with trunk horizontal, anterior processes stout and large, neck about half as long as trunk width. 2nd tergal apodeme reaching 1/2 of tergite posteriorly. 1st sternal apodeme with posterior lobes as long as wide. 2nd sternal apodeme reduced.

Male genitalia. Aedeagal shaft base broad with lateral flanges, distinctly swollen, broadest near mid length in lateral view, apex narrow; apical appendages divergent.

Material examined. CHINA: 5 males, Hebei Prov., Weichang County, Jiangjiadian Township, 12.viii.2006, Coll. Duan Yani; 9 males, 2 females, Jilin Prov., Hongtu Landscape, 2.viii.1983, Coll. Wu Zhengliang & Hua Baozhen; 1 male, Shaanxi Prov., Mt. Qinling, 10.ix.1987, Coll. Chai Yonghui; 1 male, 10 males, 5 females, Gansu Prov., Daheba County, 30.vii.2004, 1870m, Coll. Lu Lin & Duan Yani; 18 maels, 20 femailes, Qinghai Prov. Xining City, Botanic Garden, 15.viii.2012; 28 males, 30 females, Xinjiang Autonomous Region, Bole City, Cimaogou Township, 26.vii.2006, Coll. Liu Yang & Yang Rui (NWAFU).

Distribution. Europe to Kamchatka, south to Mongolia (Kwon 1988) and China (Hebei, Jilin, Shaanxi, Gansu, Qinghai, Xinjiang).

Remarks. The treatment of M. latiaedeagus Dai, Li & Chen 2008 as a synonym is based on the same type localities and following characters: forewing elongate, surpassing end of abdomen; aedeagal shaft distinctly swollen and broadest near midlength in lateral view.